Ragnaros

Can't be countered.
Trample, Cumulative upkeep - Sacrifice a
Mountain. When Ragnaros enters play, he deals
5 damage to all creatures. Players can't gain life.
Your sorcery spells cost {2} less.
{t}{r}{r}{r}: Put three 5/4 Fire Elementals into
play.
{r}: Red creatures gain +1/+0 until end of turn.
{r}: Destroy all artifacts.
By fire be purged!